mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2024-12-30 21:40:57 +01:00
375 lines
9.8 KiB
C
375 lines
9.8 KiB
C
/* mz_strm_bzip.c -- Stream for bzip inflate/deflate
|
|
part of the minizip-ng project
|
|
|
|
Copyright (C) 2010-2021 Nathan Moinvaziri
|
|
https://github.com/zlib-ng/minizip-ng
|
|
|
|
This program is distributed under the terms of the same license as zlib.
|
|
See the accompanying LICENSE file for the full text of the license.
|
|
*/
|
|
|
|
|
|
#include "mz.h"
|
|
#include "mz_strm.h"
|
|
#include "mz_strm_bzip.h"
|
|
|
|
#include "bzlib.h"
|
|
|
|
/***************************************************************************/
|
|
|
|
static mz_stream_vtbl mz_stream_bzip_vtbl = {
|
|
mz_stream_bzip_open,
|
|
mz_stream_bzip_is_open,
|
|
mz_stream_bzip_read,
|
|
mz_stream_bzip_write,
|
|
mz_stream_bzip_tell,
|
|
mz_stream_bzip_seek,
|
|
mz_stream_bzip_close,
|
|
mz_stream_bzip_error,
|
|
mz_stream_bzip_create,
|
|
mz_stream_bzip_delete,
|
|
mz_stream_bzip_get_prop_int64,
|
|
mz_stream_bzip_set_prop_int64
|
|
};
|
|
|
|
/***************************************************************************/
|
|
|
|
typedef struct mz_stream_bzip_s {
|
|
mz_stream stream;
|
|
bz_stream bzstream;
|
|
int32_t mode;
|
|
int32_t error;
|
|
uint8_t buffer[INT16_MAX];
|
|
int32_t buffer_len;
|
|
int16_t stream_end;
|
|
int64_t total_in;
|
|
int64_t total_out;
|
|
int64_t max_total_in;
|
|
int8_t initialized;
|
|
int16_t level;
|
|
} mz_stream_bzip;
|
|
|
|
/***************************************************************************/
|
|
|
|
int32_t mz_stream_bzip_open(void *stream, const char *path, int32_t mode) {
|
|
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
|
|
|
|
MZ_UNUSED(path);
|
|
|
|
bzip->bzstream.bzalloc = 0;
|
|
bzip->bzstream.bzfree = 0;
|
|
bzip->bzstream.opaque = 0;
|
|
bzip->bzstream.total_in_lo32 = 0;
|
|
bzip->bzstream.total_in_hi32 = 0;
|
|
bzip->bzstream.total_out_lo32 = 0;
|
|
bzip->bzstream.total_out_hi32 = 0;
|
|
|
|
bzip->total_in = 0;
|
|
bzip->total_out = 0;
|
|
|
|
if (mode & MZ_OPEN_MODE_WRITE) {
|
|
#ifdef MZ_ZIP_NO_COMPRESSION
|
|
return MZ_SUPPORT_ERROR;
|
|
#else
|
|
bzip->bzstream.next_out = (char *)bzip->buffer;
|
|
bzip->bzstream.avail_out = sizeof(bzip->buffer);
|
|
|
|
bzip->error = BZ2_bzCompressInit(&bzip->bzstream, bzip->level, 0, 0);
|
|
#endif
|
|
} else if (mode & MZ_OPEN_MODE_READ) {
|
|
#ifdef MZ_ZIP_NO_DECOMPRESSION
|
|
return MZ_SUPPORT_ERROR;
|
|
#else
|
|
bzip->bzstream.next_in = (char *)bzip->buffer;
|
|
bzip->bzstream.avail_in = 0;
|
|
|
|
bzip->error = BZ2_bzDecompressInit(&bzip->bzstream, 0, 0);
|
|
#endif
|
|
}
|
|
|
|
if (bzip->error != BZ_OK)
|
|
return MZ_OPEN_ERROR;
|
|
|
|
bzip->initialized = 1;
|
|
bzip->stream_end = 0;
|
|
bzip->mode = mode;
|
|
return MZ_OK;
|
|
}
|
|
|
|
int32_t mz_stream_bzip_is_open(void *stream) {
|
|
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
|
|
if (bzip->initialized != 1)
|
|
return MZ_OPEN_ERROR;
|
|
return MZ_OK;
|
|
}
|
|
|
|
int32_t mz_stream_bzip_read(void *stream, void *buf, int32_t size) {
|
|
#ifdef MZ_ZIP_NO_DECOMPRESSION
|
|
MZ_UNUSED(stream);
|
|
MZ_UNUSED(buf);
|
|
MZ_UNUSED(size);
|
|
return MZ_SUPPORT_ERROR;
|
|
#else
|
|
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
|
|
uint64_t total_in_before = 0;
|
|
uint64_t total_out_before = 0;
|
|
uint64_t total_in_after = 0;
|
|
uint64_t total_out_after = 0;
|
|
int32_t total_in = 0;
|
|
int32_t total_out = 0;
|
|
int32_t in_bytes = 0;
|
|
int32_t out_bytes = 0;
|
|
int32_t bytes_to_read = sizeof(bzip->buffer);
|
|
int32_t read = 0;
|
|
int32_t err = BZ_OK;
|
|
|
|
|
|
if (bzip->stream_end)
|
|
return 0;
|
|
|
|
bzip->bzstream.next_out = (char *)buf;
|
|
bzip->bzstream.avail_out = (unsigned int)size;
|
|
|
|
do {
|
|
if (bzip->bzstream.avail_in == 0) {
|
|
if (bzip->max_total_in > 0) {
|
|
if ((int64_t)bytes_to_read > (bzip->max_total_in - bzip->total_in))
|
|
bytes_to_read = (int32_t)(bzip->max_total_in - bzip->total_in);
|
|
}
|
|
|
|
read = mz_stream_read(bzip->stream.base, bzip->buffer, bytes_to_read);
|
|
|
|
if (read < 0)
|
|
return read;
|
|
|
|
bzip->bzstream.next_in = (char *)bzip->buffer;
|
|
bzip->bzstream.avail_in = (uint32_t)read;
|
|
}
|
|
|
|
total_in_before = bzip->bzstream.avail_in;
|
|
total_out_before = bzip->bzstream.total_out_lo32 +
|
|
(((uint64_t)bzip->bzstream.total_out_hi32) << 32);
|
|
|
|
err = BZ2_bzDecompress(&bzip->bzstream);
|
|
|
|
total_in_after = bzip->bzstream.avail_in;
|
|
total_out_after = bzip->bzstream.total_out_lo32 +
|
|
(((uint64_t)bzip->bzstream.total_out_hi32) << 32);
|
|
|
|
in_bytes = (int32_t)(total_in_before - total_in_after);
|
|
out_bytes = (int32_t)(total_out_after - total_out_before);
|
|
|
|
total_in += in_bytes;
|
|
total_out += out_bytes;
|
|
|
|
bzip->total_in += in_bytes;
|
|
bzip->total_out += out_bytes;
|
|
|
|
if (err == BZ_STREAM_END) {
|
|
bzip->stream_end = 1;
|
|
break;
|
|
}
|
|
if (err != BZ_OK && err != BZ_RUN_OK) {
|
|
bzip->error = err;
|
|
break;
|
|
}
|
|
} while (bzip->bzstream.avail_out > 0);
|
|
|
|
if (bzip->error != 0)
|
|
return MZ_DATA_ERROR;
|
|
|
|
return total_out;
|
|
#endif
|
|
}
|
|
|
|
#ifndef MZ_ZIP_NO_COMPRESSION
|
|
static int32_t mz_stream_bzip_flush(void *stream) {
|
|
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
|
|
if (mz_stream_write(bzip->stream.base, bzip->buffer, bzip->buffer_len) != bzip->buffer_len)
|
|
return MZ_WRITE_ERROR;
|
|
return MZ_OK;
|
|
}
|
|
|
|
static int32_t mz_stream_bzip_compress(void *stream, int flush) {
|
|
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
|
|
uint64_t total_out_before = 0;
|
|
uint64_t total_out_after = 0;
|
|
uint32_t out_bytes = 0;
|
|
int32_t err = BZ_OK;
|
|
|
|
do {
|
|
if (bzip->bzstream.avail_out == 0) {
|
|
err = mz_stream_bzip_flush(bzip);
|
|
if (err != MZ_OK)
|
|
return err;
|
|
|
|
bzip->bzstream.avail_out = sizeof(bzip->buffer);
|
|
bzip->bzstream.next_out = (char *)bzip->buffer;
|
|
|
|
bzip->buffer_len = 0;
|
|
}
|
|
|
|
total_out_before = bzip->bzstream.total_out_lo32 +
|
|
(((uint64_t)bzip->bzstream.total_out_hi32) << 32);
|
|
|
|
err = BZ2_bzCompress(&bzip->bzstream, flush);
|
|
|
|
total_out_after = bzip->bzstream.total_out_lo32 +
|
|
(((uint64_t)bzip->bzstream.total_out_hi32) << 32);
|
|
|
|
out_bytes = (uint32_t)(total_out_after - total_out_before);
|
|
|
|
bzip->buffer_len += out_bytes;
|
|
bzip->total_out += out_bytes;
|
|
|
|
if (err == BZ_STREAM_END)
|
|
break;
|
|
if (err < 0) {
|
|
bzip->error = err;
|
|
return MZ_DATA_ERROR;
|
|
}
|
|
} while ((bzip->bzstream.avail_in > 0) || (flush == BZ_FINISH && err == BZ_FINISH_OK));
|
|
|
|
return MZ_OK;
|
|
}
|
|
#endif
|
|
|
|
int32_t mz_stream_bzip_write(void *stream, const void *buf, int32_t size) {
|
|
#ifdef MZ_ZIP_NO_COMPRESSION
|
|
MZ_UNUSED(stream);
|
|
MZ_UNUSED(buf);
|
|
MZ_UNUSED(size);
|
|
return MZ_SUPPORT_ERROR;
|
|
#else
|
|
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
|
|
int32_t err = MZ_OK;
|
|
|
|
bzip->bzstream.next_in = (char *)(intptr_t)buf;
|
|
bzip->bzstream.avail_in = (unsigned int)size;
|
|
|
|
err = mz_stream_bzip_compress(stream, BZ_RUN);
|
|
if (err != MZ_OK) {
|
|
return err;
|
|
}
|
|
|
|
bzip->total_in += size;
|
|
return size;
|
|
#endif
|
|
}
|
|
|
|
int64_t mz_stream_bzip_tell(void *stream) {
|
|
MZ_UNUSED(stream);
|
|
|
|
return MZ_TELL_ERROR;
|
|
}
|
|
|
|
int32_t mz_stream_bzip_seek(void *stream, int64_t offset, int32_t origin) {
|
|
MZ_UNUSED(stream);
|
|
MZ_UNUSED(offset);
|
|
MZ_UNUSED(origin);
|
|
|
|
return MZ_SEEK_ERROR;
|
|
}
|
|
|
|
int32_t mz_stream_bzip_close(void *stream) {
|
|
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
|
|
|
|
if (bzip->mode & MZ_OPEN_MODE_WRITE) {
|
|
#ifdef MZ_ZIP_NO_COMPRESSION
|
|
return MZ_SUPPORT_ERROR;
|
|
#else
|
|
mz_stream_bzip_compress(stream, BZ_FINISH);
|
|
mz_stream_bzip_flush(stream);
|
|
|
|
BZ2_bzCompressEnd(&bzip->bzstream);
|
|
#endif
|
|
} else if (bzip->mode & MZ_OPEN_MODE_READ) {
|
|
#ifdef MZ_ZIP_NO_DECOMPRESSION
|
|
return MZ_SUPPORT_ERROR;
|
|
#else
|
|
BZ2_bzDecompressEnd(&bzip->bzstream);
|
|
#endif
|
|
}
|
|
|
|
bzip->initialized = 0;
|
|
|
|
if (bzip->error != BZ_OK)
|
|
return MZ_CLOSE_ERROR;
|
|
return MZ_OK;
|
|
}
|
|
|
|
int32_t mz_stream_bzip_error(void *stream) {
|
|
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
|
|
return bzip->error;
|
|
}
|
|
|
|
int32_t mz_stream_bzip_get_prop_int64(void *stream, int32_t prop, int64_t *value) {
|
|
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
|
|
switch (prop) {
|
|
case MZ_STREAM_PROP_TOTAL_IN:
|
|
*value = bzip->total_in;
|
|
break;
|
|
case MZ_STREAM_PROP_TOTAL_IN_MAX:
|
|
*value = bzip->max_total_in;
|
|
break;
|
|
case MZ_STREAM_PROP_TOTAL_OUT:
|
|
*value = bzip->total_out;
|
|
break;
|
|
case MZ_STREAM_PROP_HEADER_SIZE:
|
|
*value = 0;
|
|
break;
|
|
default:
|
|
return MZ_EXIST_ERROR;
|
|
}
|
|
return MZ_OK;
|
|
}
|
|
|
|
int32_t mz_stream_bzip_set_prop_int64(void *stream, int32_t prop, int64_t value) {
|
|
mz_stream_bzip *bzip = (mz_stream_bzip *)stream;
|
|
switch (prop) {
|
|
case MZ_STREAM_PROP_COMPRESS_LEVEL:
|
|
if (value < 0)
|
|
bzip->level = 6;
|
|
else
|
|
bzip->level = (int16_t)value;
|
|
return MZ_OK;
|
|
case MZ_STREAM_PROP_TOTAL_IN_MAX:
|
|
bzip->max_total_in = value;
|
|
return MZ_OK;
|
|
}
|
|
return MZ_EXIST_ERROR;
|
|
}
|
|
|
|
void *mz_stream_bzip_create(void **stream) {
|
|
mz_stream_bzip *bzip = NULL;
|
|
|
|
bzip = (mz_stream_bzip *)MZ_ALLOC(sizeof(mz_stream_bzip));
|
|
if (bzip != NULL) {
|
|
memset(bzip, 0, sizeof(mz_stream_bzip));
|
|
bzip->stream.vtbl = &mz_stream_bzip_vtbl;
|
|
bzip->level = 6;
|
|
}
|
|
if (stream != NULL)
|
|
*stream = bzip;
|
|
|
|
return bzip;
|
|
}
|
|
|
|
void mz_stream_bzip_delete(void **stream) {
|
|
mz_stream_bzip *bzip = NULL;
|
|
if (stream == NULL)
|
|
return;
|
|
bzip = (mz_stream_bzip *)*stream;
|
|
if (bzip != NULL)
|
|
MZ_FREE(bzip);
|
|
*stream = NULL;
|
|
}
|
|
|
|
void *mz_stream_bzip_get_interface(void) {
|
|
return (void *)&mz_stream_bzip_vtbl;
|
|
}
|
|
|
|
extern void bz_internal_error(int errcode) {
|
|
MZ_UNUSED(errcode);
|
|
}
|